This Weaver top mount rings make an excellent accessory for use in the field or on the range. They are ideal for reducing eye strain during extended use and provide you with much needed relief. The rings can be set up to position your scope forward or rearward for simple customization. It offer wide top steel caps that hold zero under the most jarring recoil. These quick detach rings are the Original Weaver-style.Specifications and Features: Material: Aluminum with Steel Top Strap and Steel Hardware Style: Weaver Ring Diameter: 1 Loosen the thumb nuts and you can go back to iron sights in seconds Matte Black Finish